Synchronous occurrence of ipsilateral synovial chondromatosis of the temporomandibular joint and pleomorphic adenoma of the parotid gland

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics
Eleni SarlaniRobert A Ord

Abstract

We present a unique case characterized by true coexistence of synovial chondromatosis (SC) of the temporomandibular joint (TMJ) with a salivary gland tumor, specifically pleomorphic adenoma, of the ipsilateral parotid gland. The possibility that the condition was the result of a single pathologic entity, ie, SC with extracapsular involvement or pleomorphic adenoma affecting the TMJ, received strong consideration. Nonetheless, careful assessment of the clinical, radiographic, MRI, and surgical findings strongly suggested the synchronous occurrence of 2 separate pathologic processes, despite their close proximity. Further, histopathologic examination confirmed the presence of both SC of the TMJ and pleomorphic adenoma of the superficial lobe of the ipsilateral parotid gland. Previous reports have pointed out the possibility of misdiagnosing extracapsular spread of SC as a salivary gland tumor. Vice versa, it has been noted that parotid gland tumors, especially malignant, may cause TMJ symptoms similar to those of SC. However, to the best of our knowledge, this is the first time that true synchronous occurrence of ipsilateral SC and pleomorphic adenoma, or parotid tumor of any kind, is reported.

Citations

Aug 6, 2005·AACN Clinical Issues·Eleni SarlaniEdward G Grace
Apr 28, 2007·Dento Maxillo Facial Radiology·B LiH Cai
Oct 31, 2008·Journal of Magnetic Resonance Imaging : JMRI·Bettina Hohlweg-MajertDirk Schulze

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